| **BUSINESS SEGMENT INFORMATION - Total Assets by Segment (Details) - USD ($) $ in Millions** | Jul. 01, 2022 | Dec. 31, 2021 |
|----------------------------------------------------------------------------------------------|---------------|---------------|
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | $ 34,138      | $ 34,709      |
| Identifiable intangible assets acquired                                                      | 6,321         | 6,640         |
| Operating segments | Integrated Mission Systems                                              |          |          |
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | 11,761        | 11,830        |
| Operating segments | Space & Airborne Systems                                            |          |          |
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | 8,381         | 8,151         |
| Operating segments | Communication Systems                                                   |          |          |
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | 6,170         | 6,035         |
| Other non-reportable businesses                                                              |          |          |
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | 0             | 3             |
| Corporate                                                                                    |          |          |
| **Segment Reporting Information [Line Items]**                                               |          |          |
| Assets                                                                                       | 7,826         | 8,690         |
| Identifiable intangible assets acquired                                                      | $ 6,300       | $ 6,600       |

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| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
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| - Definition
Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.
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No definition available.
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